Improvement in cutter-heads



latent @Wire EUEUSN. MEEIAMOE WORCESTER, MASSACHUSETTS.

Letters Patent N 98,396, dated December- 28, 1869.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, RUFUS N. MERIAM, of the city and county of Worcester, in the State of Massachusetts, have invented a new and useful Improvement in Attaching Spurs to Four-Sided Rebating-Heads, of which the' following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which- Figures l and 2 represent outside views, at right angles to each other, of a four-sided rebat-ing-head, with spurs attached, in accordance with my improvement; and

Figure 3, a side or face view of said head, with-the spurs and cutters they operate in connection with removed.

Similar letters of reference indicate corresponding parts.

My improvement consists in a novel construction of head for carrying the cutters of a grooving or rebatingmachine, whereby said cuttersmay be more easily detached or adjusted, when necessary, ior sharpening or otherpurposes.

Referring to the accompanying drawing- VA. represents a four-sided rebating-head, having the usual hole or bore a through its centre, for attachment of said head to its driving-mandrel or shaft.

B B are the ordinary and adjustable cutters, secured to the head in the usual manner, for cutting and dressing the face of the rebate, whichl is nicked or gauged v in advance, and its shoulder cut down or formed by spurs G C, as usual in other four-sided rebating-heads. These spurs 0.0, however, I attach in a diierent and more advantageous manner'than has heretofore beenpractised.` I Y Thus, I cut grooves b-b in the one side or face of the head, in radial directions to its axis, or diagonally 'across the head, .as it were, and of a width to receive closely within them the spurs O O, that I construct with slots or openings c c, at -their inner or back portions, vfor holding-down screws d dtopass through, and which, on' being slacked, readily admit of the spurs being entered and adjusted Within or removed from the grooves in the head, as required.

This forms a most convenient, stable, and adyantageous modeof attaching the spurs tothe head.

What is here claimed, and desired to he secured by Letters Patent, is-

, The rebating cutter-head, (constructed as herein shown and described,) consisting of the rectangular head A, provided'with radial grooves b, for the reception of spurs G, and dovetailed 'grooves parallel with its axis, to receive'theholt for securing the cutter.

RUFUS N. MERIAM.

Titnessess f H. A. RICHARDSON, S. F. BOND. 

